Fountain tooth brush



March l0, 1936. J. G. KINKADE 033,197

FOUNTAIN TOOTH BRUSH Filed oct. 21, 1933 INI/'ENT OR A BY N NKW ATTORNEYS.

Patented Mar. l0, 1936 UNITED STATES PATENT ori-ICE FOUNTAIN TOOTH BRUSH James G. Kinkade, Pasadena, Calif. Application October 21, 1933, Serial No. 694,570

8 Claims. (Cl. 15-137) This invention relates to fountain brushes.

Ihe general object of the invention is to provide an improved fountain brush which is particularly useful in connection with applying dentifrice to the teeth or shaving cream to the face, and wherein means is provided to prevent waste of the material being used.

A further object of the invention is to provide a fountain brush including novel, movable, manm ually operated means for feeding material to the brush.

Another object of the invention is to provide an improved fountain brush wherein a removable cartridge is employed for holding the material.

Other objects and the advantages of this invention will be apparent from the following specification taken in connection with the accompanying drawing, wherein:

Fig. 1 -is a longitudinal sectional View through a brush embodying the features of my invention;

Fig. 2 is an enlarged transverse section taken on line 2-2 of Fig. 1;

Fig. 3 is a longitudinal sectional view of the end of the handle member taken on line 3-3 of Fig. 2;

Fig. 4 is a longitudinal sectional view similar to Fig. 1 showing the parts in closed position; and

Fig. 5 is an enlarged side elevation, partly in section, showing the replacement cartridge.

Referring to the drawing by reference characters, I have shown my invention as embodied in a brush which includes at one end a tubular handle I0 to which a brush back having bristles I I is secured and in which a replaceable cartridge I2 is arranged. The back is provided with a cavity in which a piston yI 3 is mounted and this piston controls ports 5 and I4 through which material is fed to the bristles II.

The piston I3 is urged to a closed position by a spring I6. A plunger rod I1 is mounted on the tubular handle I0 and includes at one end a part which moves into a cylindrical passageway I8,

and at the other end is embedded in a closure cap I9. The plunger rod I1 passes through and has a tight t in a washer 20 which is movably mounted in the cartridge I2.

The cap I9 is provided with opposed lips 2| on the outer end thereof and with lips 22 on the inner surface thereof, while the tubular handle I0 has a peripheral lip 23 on the outer wall thereof and the construction is such that by placing pressure on the Walls at the open end of the handle I0 the closure cap I9 can be removed from the tubular handle for the purpose of replacing the used cartridge with a fresh one.

Further, when the closure cap is moved inwardly to the position shown in Figs. 3 and 4, the lip 23 becomes positioned in a groove 26, as shown, to hold the closure member in a closed position.

In use closure members 21 are removed from the ends of the cartridge I2 and the cartridge is inserted 'in the tubular handle I0. The plunger rod I1 is then inserted in the aperture 28 and the closure cap I9 is moved to the position shown in Fig. 1 carrying the plunger with it. 1

When the operator wishes to force some of the ingredient in the cartridge I2 into the bristles II, the cap I9 is reciprocated, thus forming a partial vacuum in the cylinder I3 so that on withdrawal of the rod I'I part of the ingredients 15 fill the chamber I8. The reciprocating operation is repeated until suilicient ingredients have passedv through the parts I5 and 5 to satisfy the requirements. After this is done the cap is moved to the position shown in Fig. 4 until further use is 20 required.

What I desire to claim and secure by Letters Patent isz- 1. In a fountain brush, a tubular removable paste-carrying means fitting frictionally in a tu- 25 bular handle, a passageway at the forward end of the tubular handle. a. one-way valve in said passageway for controlling communication therethrough, said paste-carrying means containing a washer movable longitudinally making air-tight 30 contact with its inner walls and also air tight over a plunger-rod carried by said cap, said cap being limited in its longitudinal stroke so that when the inner end of the attached plunger rod is withdrawn from the passageway at the for- 35 ward end of the tubular handle, it permits atmospheric pressure of air to move said air-tight washer forward and forces paste into the partial vacuum created by the withdrawal of the plunger rod from the passageway. 4.0

2. In a device as described in combination, a brush back carried by and communicating with a tubular handle having at walls; a closure cap manually movable on said tubular handle, the longitudinal movement of the same limited by 45 locking means consisting of lips on the flat walls of said closure cap coming in contact with a raised lip on the iat walls of said tubular handle whereby pressure on the at walls at the open end thereof will depress the walls and thus permit removal of the paste-carrying means from the tubular handle and the replacement oi a loaded cartridge, said cartridge fitting frictionally with the walls of the tubular handle at the 55 having a bore, said handle bore and head bore'- being connected by an intermediate bore, bristles in said head, said head bore having a port com- -municating therewith, a one-wayvalvein said head bore adjacent said port, a cap movable on said handle, a cartridge ilttingsaid handle bore, a piston in said cartridge, a plunger moved by said cap and extending through said handle bore and. having a sliding flt within the intermediate bore, said piston having-an aperture through whichy said plunger passes.

4. In a fountain brush, a handle having a bore therein and having a head thereon, the head having a bore, said handle bore and head bore being connected by an intermediate bore, bristles in said head, said head bore having a port communicating with the head bore, a one-way valve in said head bore adjacent said port, a cap movable on said handle, said handle having lips thereon and said cap having lips to engage said nrst mentioned lips to limit the movement of the cap, a cartridge iltting said handle bore, a piston in said cartridge, said cap having a plunger extending through said handle bore and havlng a sliding airtight t within the intermediate bore. said piston having an aperture through which said plunger passes.

-5. In a fountain brush, a handle having a bore therein and having a head thereon, the head having a bore, said handle bore and head bore being connected by an intermediate cylindrical bore, bristles in said head, said head bore having a port at the base of the bristles and communicating with the head bore, a one-way valve in lsaid head bore adjacent said port, a cap slidable on said handle, said handle having means thereon to limit the movement of the cap', a cartridge tting said handle bore, a piston-in said cartridge, said cap having a plunger extending through said handle bore and having a sliding airtight fit within the intermediate bore, said piston having an aperture through which said plunger passes.

6. In a fountain brush, a handle having a bore therein and having a head thereon, the head having a bore, said handle bore and head bore being connected by an intermediate cylindrical bore. bristles in said head, said head bore having a'port at the base of the bristles and communicating with the head bore. a one-way valve in said head bore adjacent said port, a cap slidable on said handle. said handle having lips thereon and said cap having lips engaging said first mentioned lips to limit the movement of the cap, a cartridge fitting said handle bore and projecting at one end beyond the free end of said handle, a piston in said cartridge, said cap having'a plunger extending through said handle bore and having a sliding airtight fit within the .intermediate bore, said piston having an aperture through which said plunger passes.

7. In a fountain brush, a handle having a bore therein andl having a head thereon. the head having a bore, said handle bore and head bore being connected by an intermediate cylindrical bore, bristles in said head, said head bore having a port at the base of the bristles and communieating with the head bore, a one-way valve in said head bore adjacent said port, the free end of said handle being flexible and having slits therein, a cap slidable on said handle, said handle adjacent said slits having lips thereon and said cap having lips engaging said first mentioned lips to limit the movement of the cap, a

cartridge fitting said handle bore and projecting at one end beyond the free end of said handle, a piston in said cartridge, said cap having a plunger extending through said handle bore and having a sliding airtight fit within the intermediate bore, said piston having an aperture through which said plunger passes.

8. In a fountain brush having a tubular handle with a passageway at the forward end of the handle, a one-way valve at the forward end of said passageway, a tubular removable cartridge fitting frictionally in .said tubular handle, a washer movable longitudinally in said cartridge and making air-tight contact with its inner walls, a cap mounted on said handle and having a plunger rod tting said passageway, means to limit the longitudinal stroke of the plunger so that when the inner end of the plunger rod is withdrawn from the passageway it permits atmospheric pressure of air to move the aid washer forward and forces paste into the p ial vacuum created by the withdrawal of the plunger rod from the passageway.

JAMES G. KINKADE. 

